Update: More orcs were replaced by females and some of them wear new clothes.
Unzip and put "WSgames-WindowsNoEditor_FEM.pak" into the game pak file directory: Steam\steamapps\common\Princess_Blade\WSgames\Content\Paks
It's a green mod that doesn't change any original game file, the pak file works the same way as a DLC.
Requirements: No other requirements other than the base game.
Update: Replace the old mod file with new version.
Uninstall: delete the mod file "WSgames-WindowsNoEditor_FEM.pak" (not "WSgames-WindowsNoEditor.pak" this is the original game file)